| 摘要 |
A milling tool for removing a packer from a well includes a releasable catcher for supporting remains of a milled packer (51). The catcher has a sleeve (26) with deflectable fingers (29) which normally support the remains of the packer. If the packer should become stuck, the fingers (29) press on a release ring (39) which has a ramp (43) that engages a complementary ramp (42) on a shoulder (41) on the mandrel (14) of the mill. The ramps cam the ring outwardly until the ring breaks in tension at a deliberately weakened location (52). This releases the sleeve (26) to slide downwardly and permit the fingers (29) to deflect inwardly into a recess (23), thereby clearing the bore of the stuck packer.
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